I am using the openblocks mod found in the attack of the b team mod pack (1.6.4).

There is a glitch I discovered with blocks that deal with XP from Openblock such as the Openblock Tank and the Openblock XP Drain block. Right click on the openblock tank to take back some of your XP (I took 30). Then go and enchant a tool (I enchanted a diamond pick axe) and then after enchanting step back on the XP Drain block and for some reason your XP will go back to 30 and it will start being put back into the tank. Essentially infinite XP, this needs to be fixed.

this needs to be fixed.

It's so urgent we fixed that two versions ago. Also, #414, #399, #387, #362, #350, etc. Or maybe it's bug we fixed in OpenModsLib 0.4b, few months ago? I don't know since there is no information about version in bug report.

Reopen only if your version is 1.2.9.